28 Dec
2011
28 Dec
'11
3:25 p.m.
WHAT brand and model computer are you talking about?
On Tue, 27 Dec 2011, Enrico Lazzerini wrote:
Well this is all i know:
8"
STAT d:DSK:
9600 r: 128 Byte Record Capacity
1200 k: Kilobyte Drive Capacity
128 d: 32 Byte Directory Entries
128 c: Checked Directory Entries
128 e: Records/ Extent
16 b: Records/ Block
64 s: Sectors/ Track
2 t: Reserved Tracks
2 SIDES
This is that I calculate:
BEGIN SCO2 (1024 bytes/sector) - DSDD 8"
DENSITY MFM ,HIGH
1200K disk capacity is close to maximum for an 8" diskette.
It is what you expect from 8" DSDD. "High" would be incorrect usage, but
from a 5.25" perspective, it fits.
CYLINDERS 77 SIDES 1 SECTORS 8,1024
NO.
You can not get 1200K disk capacity from single sided.
SIDE1 0 1,2,3,4,5,6,7,8,9
SIDE2 0 1,2,3,4,5,6,7,8,9
Those are 10 sectors per side. You said 8
Are you sure that that is the sector sequence?
Here what 22disk tell me:
http://elazzerini.interfree.it/Foto2982.jpg
Where I'm wrong?
1) Instead of transcribing some text, you sent a URL to a picture that is
more than 2 MEGAbytes. (a photograph of your screen?)
THANK YOU for sending the URL instead of attaching it!
A) Not everybody reads their mail in a web browser. Sending a URL
requires cut and paste to get it TO the web browser.
B) Believe it or not, some of us use dial-up! 2M takes too long.
C) Surely that file could be MUCH smaller. Thats a kilobyte for
each character on the screen.
Was it an error message? That would only call for a few lines of text.
Was it a scrambled display, such as non-ASCII characters in filenames?
2) You are posting asking for technical support for an unregistered copy
of a program on a forum where the author is an active participant! If you
REGISTER the program, then he will provide support, maybe even an updated
copy of the program, etc. (It may have additional formats now!)
You didn't tell us the name of the format.
You didn't tell us the form of your calculations. Were they a wild
guess? or did you look at sectors on the disk to determine them?
What "side-pattern" is it? Does it alternate sides before incrementing
cylinder, or does it increment cylinder first, and use the first side
before starting on the second? Does it then go UP the second side, or
DOWN?
You didn't provide us with hex dumps of the directory sectors. NO, DO NOT
SEND US MORE PHOTOGRAPHS! If the problem is in the directory, then
let's see THAT! It's 32 bytes per directory entry/extent - depending on
what the problem is, it might not take more than a few.
